问题描述：
What's the matter?You don't look well.Anything wrong
--What's the matter?You don't look well .Anything wrong?
--Yes,I'm afraid-----------.I've got a bad toothache.
A.there is B.it is C.I do D.I am
--What's the matter?You don't look well .Anything wrong?
--Yes,I'm afraid-----------.I've got a bad toothache.
A.there is B.it is C.I do D.I am
问题解答：
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